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Articles by Doc Mike Finnley

Engineering

Three Gyroscopes – Part 4

16th February 2022 Doc Mike Finnley 0

Introduction As a child I loved playing about with magnets – I still do. They can move heavy objects – such as lifting cars at a scrap yard. They can also move light (-weight!) objects [more…]

Going Postal

Cipher – A Tribute To OldTrout

7th February 2022 Doc Mike Finnley 0

Introduction Cipher – meaning zero (0), nothing or an empty set. Decipher – to make something out of that seemingly meaningless nothing. Caroline or ‘Old Trout’ (as we affectionately remember her) was a brilliant mathematician. [more…]

Engineering

Three Gyroscopes – Part 3

3rd February 2022 Doc Mike Finnley 0

Introduction In part one we looked at how a gyroscope seems to defy gravity. This is accomplished by angular momentum. We’ll come back to that later 🙂 In part two we looked at how a [more…]

Hobbies

Mum’s Crochet Work

29th December 2021 Doc Mike Finnley 0

I’ve posted these images before, but for a bit of Christmas fun I’ve added some titles. Hope that you all have a very merry Christmas and a great new year. Cheers.   © text & [more…]

Physics

Three Gyroscopes – Part 2

20th December 2021 Doc Mike Finnley 0

Introduction The “flat earth” people like to disseminate their woeful ideas. Therefore, let us spend some little time to think about the earth that we all live upon. In particular its spherical (well, almost) shape [more…]

Physics

Three Gyroscopes – Part 1

13th December 2021 Doc Mike Finnley 0

Introduction I woke up one morning thinking, “I’ll write a few articles for GP about the gyroscope. How hard can that be?”. Hmm… Well it turns out that that was a really stupid idea. Are [more…]

Computing

A Simple R6G Dye Laser – Part 3

28th July 2021 Doc Mike Finnley 0

If you’ve been following along (well done you!) then you might recall that we need a fast switch that works at a very high voltage for the laser’s pump lamp and, indeed, for the laser [more…]

Computing

A Simple R6G Dye Laser – Part 2

21st July 2021 Doc Mike Finnley 0

Lamp Light And Laser Light Pulsed lasers, like this, use an intense burst of white light (lasting fractions of a second) to stimulate the electrons in the laser’s gain medium. In the above photo you [more…]

Computing

A Simple R6G Dye Laser – Part 1

14th July 2021 Doc Mike Finnley 0

Introduction First of all, it’s great to see that Going-Postal is still up and running. It’s always a pleasure to write an article and have it published here. It’s also good to see a lot [more…]

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Elsewhere on GP

  • Godfrey Bloom, Going Postal

    Death, why are we so frightened of it?

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    Blotto or Blotter?

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    Sally and her son were up early, just after dawn, to find Martha and Iltud already drinking tea at the kitchen table, their porridge slowly bubbling away on the range.  They smiled at her as [more...]

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